Joanne D. Du, OD
Optometrist · Gilroy, CA
Joanne D. Du, OD is an optometrist with a practice address in Gilroy, California, and NPI 1649852120, issued on Apr 24, 2021. Check the license (California 34922, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joanne D. Du
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 34922 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6815 Camino Arroyo Ste 60, Gilroy, CA 95020
- Phone
- (408) 900-2000
- Enumerated
- Apr 24, 2021
- Record last updated
- Jul 17, 2023
- Fax
- (408) 713-3046
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 6815 Camino Arroyo Ste 60
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Phuc Le, OPTOMETRISTOptometrist1487691085
- Cynthia Truong, O.D.Optometrist1922302116
Verify Joanne D. Du in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 34922Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average optometrist in 2024
22 Medicare Part D claims for 11 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 68% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $184.61
4 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Joanne D. Du among 8,308 optometrist records in California
Joanne D. Du, OD is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 86% of them.
- NPI issued2021 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2023 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 optometrist records list a practice address in Gilroy
They are 16 of the 2,100 NPPES records with a practice address in Gilroy, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Gilroy → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Daniel Brown, O.D.Gilroy, CA 950201477690626
- Nhu Chu, O.D.Gilroy, CA 950201952454001
- Peter Kovach, O.D.Gilroy, CA 950201568593689
- David Lam, O.D.Gilroy, CA 950201942613575
- Phuc Le, OPTOMETRISTGilroy, CA 950201487691085
- Isabella Myers, O.D.Gilroy, CA 950201568918225
- Cary Neunzig, O.D.Gilroy, CA 950201639217235
- Paresh Patel, O.D.Gilroy, CA 950201285773804
Common questions
What is Joanne D. Du, OD's NPI number?
Joanne D. Du, OD's National Provider Identifier (NPI) is 1649852120, issued on Apr 24, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Joanne D. Du, OD located?
The NPPES record lists a practice address at 6815 Camino Arroyo Ste 60, Gilroy, CA, 95020. Phone: (408) 900-2000. Providers update this record themselves, so call before visiting.
How can I verify Joanne D. Du, OD's license?
NPPES lists California license number 34922, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Joanne D. Du, OD prescribe under Medicare Part D?
In 2024, Joanne D. Du, OD had 22 Medicare Part D claims for 11 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.